621-9939 Honeywell | RS-232/422/485 Serial Link Module
Manufacturer: Honeywell
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Part Number: 621-9939
Condition：New with Original Package
Product Type: RS-232/422/485 Serial Link Module
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Honeywell 621-9939 Serial Link Module Overview
The Honeywell 621-9939 is a high-performance Serial Link Module designed for IPC 620/621 control systems. It provides robust communication between controllers and external devices including PLCs, SCADA systems, HMIs, sensors, and remote monitoring units.
Supporting RS-232, RS-422, and RS-485 protocols, this module integrates seamlessly into both legacy and modern industrial networks. Its design ensures high-speed, real-time data exchange, ideal for manufacturing, energy management, process control, and other demanding industrial environments.
Technical Specifications
| Feature | Description |
|---|---|
| Model Number | 621-9939 |
| Type | Serial Link Communication Module |
| Communication Interfaces | RS-232, RS-422, RS-485 |
| Supported Protocols | Modbus RTU, ASCII, proprietary Honeywell protocols |
| Data Rate | Up to 115.2 kbps |
| Input Voltage Range | 10–30 VDC |
| Power Consumption | Maximum 5 W |
| Relay Outputs | 2 relays, 5 A @ 24 VDC each |
| Operating Temperature | –40°C to +85°C industrial-grade range |
| Environmental Protection | Resistant to EMI, vibration, and temperature extremes |
| Mounting | Rack-mounted within IPC 620/621 chassis |
| Dimensions | Standard IPC module size |
| Certifications | UL, CE, CSA compliant |